Thursday

August 25, 2016
**Chemistry**

h2c4h4o4 + 2naoh --> 2h2o + na2c4h4o4 as for the previous question im sorry i forgot to plug the maleic acid in the formula properly. so this ones it ^ .2213 of c4h4o4 used (maleic acid) and .1 M NaOH 1. show the equation for 1st and 2nd ionization 2. find molecular mass of...
*Monday, March 12, 2012 by Ruby*

**Math - HELP !**

there are 50 students in the seventh grade , 62 percent of these students are involved in the drama club.how many seventh grade students are in the drama club ?
*Saturday, March 10, 2012 by Remy *

**Math**

The height of a ball t seconds after it is thrown upward from a height of 6 feet and with an initial velocity of 80 feet per second is f (t) = -16t^2 + 80t + 6. According to Rolle's Theorem, what must be the velocity at some time in the interval (2, 3)? ft/sec? & Find that...
*Thursday, March 8, 2012 by Angelina*

**Math**

The height of a ball t seconds after it is thrown upward from a height of 6 feet and with an initial velocity of 80 feet per second is f (t) = -16t^2 + 80t + 6. According to Rolle's Theorem, what must be the velocity at some time in the interval (2, 3)? ft/sec? & Find that...
*Wednesday, March 7, 2012 by Angelina*

**math 2nd grade**

what is 3/5 of 10? what is 1/3 of 12?
*Monday, March 5, 2012 by ashley*

**6th Grade History**

What is the crucifixion?
*Monday, March 5, 2012 by running.from.myself*

**6th Grade History**

What was Jesus arrested and crucified for?
*Monday, March 5, 2012 by running.from.myself*

**6th Grade Geography**

Who ruled after Augustus?
*Saturday, March 3, 2012 by running.from.myself*

**Math for the middle school and elementary teacher**

A prof. teaches 2 calc. classes. The first class has 25 students and their mean on the 1st test was an 82. The 2nd class has 15 students and their mean on the same test was a 74. What is the mean on this test if the prof. combines the score for both classes? Is the answer the ...
*Tuesday, February 28, 2012 by liz*

**4th grade**

8+4
*Tuesday, February 28, 2012 by Leena*

**statistics**

12. A statistics student received a grade of 85 on a statistics midterm. If the corresponding z score equaled +1.50, and the standard deviation equaled 7, what was the average grade on this exam? a. 95.5 b. 74.5 c. 78.0 d. Cannot determine without knowing how many took the ...
*Sunday, February 26, 2012 by tim*

**7th grade science**

definition of cell cycle
*Thursday, February 23, 2012 by saranghae12*

**Math**

Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. What is the probability that you choose at least 1 of the Time magazines?
*Wednesday, February 22, 2012 by victoria*

**7th grade health**

What does anemic mean?
*Tuesday, February 21, 2012 by saranghae12*

**stats**

The sponosor of a local soccer tournament is responsible for writting an article for the local paper announcing the 1st, 2nd, 3rd place winners.If 10 teamsare invited to the tournament, ans th sponsor wanted to get the article written in adance so it can go out in the next ...
*Monday, February 20, 2012 by tim*

**math finite**

Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. (1) What is the probability that you choose 2 issues of Newsweek and 2...
*Monday, February 20, 2012 by victoria*

**math - probability**

Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. (1) What is the probability that you choose 2 issues of Newsweek and 2...
*Monday, February 20, 2012 by victoria*

**statistics**

2. The grades on a statistics midterm exam were normally distributed with a mean of 72 and a standard deviation of 8. a. What is the proportion of students received a B grade. b. What is the proportion of students that failed the exam? c. What is the grade of the 92nd ...
*Thursday, February 16, 2012 by kabita*

**math**

In the following problems, Θ = 20 + units digit of your day of birth. For example, if you were born on April 1st, then Θ = 20 + 1 = 21. If you were born on March 30th, then Θ = 20 + 0 = 20. You can solve any three of the seven given problems. 1. Alok and Bhanu ...
*Wednesday, February 15, 2012 by Anonymous*

**Calculas**

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so 4(6) would it be...
*Tuesday, February 14, 2012 by Anonymous*

**MATH**

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so 4(6) would it be...
*Tuesday, February 14, 2012 by Anonymous*

**Math please help**

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so 4(6) would it be...
*Tuesday, February 14, 2012 by Anonymous*

**3 grade math**

Is a trapezoid also a parallelogram? Explain why or why not.
*Tuesday, February 14, 2012 by Dk*

**Great News!!! :) (for teachers!!!) **

GOT A 102 ON FACS SPELLING TEST GOT 100 ON FACS TEST GOT A 94 ON MATH TEST GOT 80 ON MATH NTBK QUIZ GOT 100 ON ENG POSTER GOT 87 ON SCI HW GOT A CHECK ON SCI HW/CW GOT A 93 AEVRAGE FOR SS GOT A 87 AVERAHE FOR SCI (for the 2nd quarter 1st quarter i got a 80 so i done some rlly ...
*Monday, February 13, 2012 by Laruen *

**algebra**

sorry here it is... The 1st part of the trip the canoeist travels 60 miles at a certain speed. On the second part, he travels 18 mi at 5 mi slower. The total time is 3 hours. What was the speed on both parts of the trip??
*Saturday, February 11, 2012 by debby*

**6th grade science**

what are the four phases of mitosis??? -------,-------,-------,-------
*Sunday, February 5, 2012 by kate*

**math for elementry school teacher**

Step 1st: 1 Box Step 2nd: 3 Boxes Step 3rd: 6 Boxes How many boxes in the 354th version? How many in the nth version?
*Sunday, February 5, 2012 by deadlove*

**10th grade Math --Shadow-Pull questions**

AC=12 Db=32 AD=x
*Sunday, February 5, 2012 by Mike*

**Reading**

What is a 6th grade definition for the word "Seraph"
*Monday, January 30, 2012 by Juliana*

**7th grade science**

What are mass extinctions?
*Sunday, January 29, 2012 by saranghae12*

**math**

3rd grade create an algorithm that has a difference of 20
*Thursday, January 26, 2012 by Ali*

**Math Challenge**

Please help if can with the following problem, I have submitted the answers to the other problems like this one and were told they were incorrect. I was excited and greatful for receiving both answers because I have no clue how to work the problem. 1st answer I turned in was ...
*Thursday, January 26, 2012 by Please,Please Help *

**maths**

Given the G.P 05,0.005,0.0005.find the 7th term, find the sum of the 1st 7th term
*Wednesday, January 25, 2012 by michael*

**6th grade math**

how to solve w/3=17
*Sunday, January 22, 2012 by Isaiah*

**12th Grade Calculus **

how will you multiply y = ae^3x + be^-2x with dy/dx = 3ae^3x - 2be^-2x
*Sunday, January 22, 2012 by Akash*

**6th grade math**

1/4 * 1/2 =4D
*Monday, January 16, 2012 by kirsten*

** 5 th grade algebra**

5a-a-2a=18
*Saturday, January 14, 2012 by kennady*

**4th grade math**

What are 3/7,1/9,and 2/3 all realated to?
*Thursday, January 12, 2012 by Ivana*

**Question **

I'M CURIOS SO DON'T JUST JUDGE ME AND BE RUDE i'M REALLY CURIOUS AND i FORGOT TO ASKED THIS QUESTION. DO NOT JUDGE ME!!!! Do I start taking SAT's and ACT's in grade 10th or 11th/12th grade???? I'm really curious.
*Friday, December 30, 2011 by Lauren *

**Statistics**

2. You are given the following data. Number of Absences Final Grade 0 93 1 90 2 79 3 66 4 60 5 56 - Find the correlation coefficient for the data. - Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days. Show all ...
*Friday, December 30, 2011 by Lauren *

**Algebra**

You find that a small business loan in the amount of 50,000 is the amount you need to purchase the restaurant location. After researching banks to find the best interest rate, you find that banks for small businesses offer the best interest rate of 9% interest that compounds ...
*Thursday, December 15, 2011 by Kimberly*

**Algebra**

You find that a small business loan in the amount of 50,000 is the amount you need to purchase the restaurant location. After researching banks to find the best interest rate, you find that banks for small businesses offer the best interest rate of 9% interest that compounds ...
*Thursday, December 15, 2011 by Kimberly*

**Englidh 7 - Journal Entry (plz read) **

Demonstrating Perseverance I show perseverance when I study and work hard to raise my grade and never give up. My biggest goal is to make it to Yale University; I want to become an artist and a writer. I¡¦ll do whatever it takes to get accepted to that school. I ...
*Thursday, December 15, 2011 by Lauren *

**math 6th grade**

How to write out 10 the negative 6?
*Wednesday, December 14, 2011 by Bob*

**Math Grade 3**

what happen when you divide a 3 -digit number by 10
*Monday, December 12, 2011 by Hong*

**Math Grade 3**

what happen when you divide a 3 -digit number by 10
*Monday, December 12, 2011 by Hong*

**algebra 2nd grade**

find the missing number 42-9=43-
*Monday, December 12, 2011 by carol*

**9th grade math**

simplify x^5-x^3+x^2-1-(x^3-1)(x+1)^2/(x^2-1)^2
*Wednesday, December 7, 2011 by Anne*

**Math 4th grade**

Input 15 ? 30 10 9 3 1 Output 6 18 3 9 ? 30 90
*Wednesday, December 7, 2011 by Diamond*

**7th grade mayh**

Dimensional analysis 4.25L/h to mL/h
*Sunday, December 4, 2011 by Anonymous*

**7h grade math**

Deminsional analysis 4.25L/h to mL/
*Sunday, December 4, 2011 by Anonymous*

**grade 7 math**

which expression is equivalent to (n+10)x5
*Sunday, December 4, 2011 by vito*

**8th grade science**

what does Radium bond with and what are the reactions
*Saturday, December 3, 2011 by Anonymous*

**SAT's and ACT's **

How to pass the SAT's and ACT'S for the John Hopkins Talent Search? Here are the grade chart. Awards Ceremony Eligibility Chart (valid for students who tested by June 30, 2011) SAT Grade 7 Math >=550 or Critical Reading >=550 ACT Grade 7 Math >=21 or Reading &...
*Friday, December 2, 2011 by Laruen *

**Physics, Kinematics**

You drive with a constant speed of 15.1 m/s for 23.4 s. You then accelerate for 28.7 s to a speed of 25.8 m/s. You then slow to a stop in 37.1 s. How far have you traveled? I've tried dividing this into 3 parts. 1st- constant speed 15.1m/s*23.4s=353.34 m 2nd-accelerating I...
*Thursday, December 1, 2011 by Jackie*

**7th grade math**

please help me solve n-16= -23
*Thursday, December 1, 2011 by asia*

**math**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: 75+85+90+X ___________ > 4 x is her last score which has not been taken. ...
*Wednesday, November 30, 2011 by Jennifer*

**math**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: 75+85+90+X ----------- > or = to 85 4 x is her last score which has not ...
*Tuesday, November 29, 2011 by Jennifer*

**algebra**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: w2d2 x is her last score which has not been taken. Explain this equation and ...
*Tuesday, November 29, 2011 by Jennifer*

**math**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: w2d2 x is her last score which has not been taken. Explain this equation and ...
*Tuesday, November 29, 2011 by Jennifer*

**math 4th grade**

writing a sequence for the rule a-4=b
*Tuesday, November 29, 2011 by joe*

**7TH GRADE MATH**

please help solve -5(9K-8) + 2 (8+6K)
*Monday, November 28, 2011 by ASIA*

**Plz Help **

You I'm entering this contest Scholastic Arts and Writing Award, and I'm a bit confused so I have to register online, then fill out a form since I'm doing it and mail my art work and writing in???? I check the site but I'm confused. I'm in 7th grade by the ...
*Sunday, November 27, 2011 by Laruen*

**2 grade math**

% of 0.66? Answer 66. Am I right
*Thursday, November 24, 2011 by Anonymous*

**MAth grade 8**

x+5/6 = 3x-5/8 Solve for x
*Tuesday, November 22, 2011 by 17halimk*

**MAth grade 8**

how do you convert 2 4/5 to decimals
*Tuesday, November 22, 2011 by 17halimk*

**Another Question **

Is 8th grade is hard?
*Saturday, November 19, 2011 by Laruen *

**4th grade**

75-3m when m=8. Thanks!
*Friday, November 18, 2011 by Dominique*

**Linear Programming**

Riverside oil company in eastern Kentucky produces 3 different grades of gasoline. They are regular, premium, and supreme grades. Each barrel of regular grade sells for $77 while premium grade sells for $82 per barrel and supreme grade sells for $89 per barrel. Petroleum ...
*Thursday, November 17, 2011 by Ashley*

**differential equations **

Consider the 2nd order differential equation: x''(t)=-x-A(x^2-1)x'(t) x(0)= 0.5 x'0)= 0 ''= 2nd order,'= 1st order where A is a positive constant.As the value of A increases this equation becomes increasingly stiff. Convert this equation to two ...
*Wednesday, November 16, 2011 by Rikki *

**Pre-Algebra**

Question is: What is the algebraic equation to determine when they will meet? For the following information, I understand 5(x+y) = 3000 for 1st plane & 10(x-y) = 3000 for 2nd plane. When an airplane flies with a given wind, it can travel 3000 km in 5hrs. When the same airplane...
*Sunday, November 13, 2011 by Carol*

**Pre-Algebra**

Question is: What is the algebraic equation to determine when they will meet? For the following information, I understand 5(x+y) = 3000 for 1st plane & 10(x-y) = 3000 for 2nd plane. When an airplane flies with a given wind, it can travel 3000 km in 5hrs. When the same airplane...
*Sunday, November 13, 2011 by Carol*

**8th Grade Help **

My sister is gradating grade 8th this year and she wants to create her own 8th grade yearbook using a "marble notebook" she doesn't want to use a scrapbook she need cover ideas memorable quotes and funny ideas background ideas (when putting pictures she needs ...
*Tuesday, November 8, 2011 by Laruen *

**6th grade math**

which is bigger? 17/19 0r 0.85
*Monday, November 7, 2011 by Kate*

**6th grade math**

Which comparison is correct? A. < 0.05 = 50% B. 0.7 = < 10% C. < 25% < 0.9 D. 0.3 < 36% =
*Sunday, November 6, 2011 by Kate*

**7th grade math**

8/9 \1/4
*Saturday, November 5, 2011 by Aaron*

**8th grade math in pre-algebra**

6(2x+3)=42
*Friday, November 4, 2011 by Anonymous*

**Math**

Which would amount to more money on December 31 of this year: $500 invested on January 1st of this year at 10% annual interest compounded quarterly; or a lump sum payment of $580? (a) the $500 investment (b) both are the same (c) the $580 lump sum (d) there is not enough ...
*Thursday, November 3, 2011 by Michael *

**8th grade math**

collect like terms 3a+2a^2+a-a^2
*Wednesday, November 2, 2011 by Hector*

**Math**

Solve the system using any algebraic method. 2x - 2y + z = 3 5y - z = -31 x + 3y + 2z = -21 ______________________ The answer I got for this is ( -26, 6,67) but I know its wrong and I don't know why. Help please >< my work is at the bottom I used substitution method ...
*Tuesday, November 1, 2011 by Linda*

**MATH 7th GRADE**

7ã3 / ã 5
*Saturday, October 29, 2011 by PLEASE HELP*

**science**

If a 150 pound man walks onto an elevator. Suddenly it rises rapidly from the 1st to 14th floor. if the man steps onto a scale in the elevator during the rapid rise, he would weigh... A) 150 pounds B) More than 150 pounds C) Less than 150 pounds Please explain, thank you.
*Saturday, October 29, 2011 by ABC123DOREMI*

**science**

If a 150 pound man walks onto an elevator. Suddenly it rises rapidly from the 1st to 14th floor. if the man steps onto a scale in the elevator during the rapid rise, he would weigh... A) 150 pounds B) More than 150 pounds C) Less than 150 pounds Please explain, thank you.
*Saturday, October 29, 2011 by ABC123DOREMI*

**Science**

If a 150 pound man walks onto an elevator. Suddenly it rises rapidly from the 1st to 14th floor. if the man steps onto a scale in the elevator during the rapid rise, he would weigh... A) 150 pounds B) More than 150 pounds C) Less than 150 pounds Please explain, thank you.
*Saturday, October 29, 2011 by ABC123DOREMI*

**Fourth grade math**

What's range mean?
*Thursday, October 27, 2011 by Zoe*

**MAth grade 8**

y^2-4y+4/2-6y x 2y+4/3y^2-12
*Wednesday, October 26, 2011 by Aldwin*

**Maths Grade 8**

m^2-m-6 m^2 _________ x ______ m^2-9 m^2+2m
*Wednesday, October 26, 2011 by Aldwin*

**4 grade math**

complete the following problem 4+8+7/3*72
*Monday, October 24, 2011 by Maria *

**geography**

Which statements describe cultural influences? Florida is bordered by water on three sides. French is spoken in parts of Louisiana. Forests are cleared to provide space for cattle grazing. Male children are encouraged to attend the university. The longest river on the ...
*Monday, October 24, 2011 by Alyse*

**PLZ HELP....STATS**

You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
*Sunday, October 23, 2011 by Jennifer*

**Stats**

You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
*Sunday, October 23, 2011 by Jennifer*

**Math**

You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
*Friday, October 21, 2011 by Jen*

**5th Grade Science**

Creation of landforms??
*Thursday, October 20, 2011 by Julie*

**math**

The number uses every number 0-9 the numbers are used only once the fourth digit is 4 the first digit in the billions place is 3 the 5 is next to the last digit the sixth digit is 7 the digit after 3 is 9 the digit before 5 is 2the third digit is half the value of the eigth ...
*Thursday, October 20, 2011 by Anonymous*

**physics**

After a jump, a skydiver reaches terminal speed in 10 seconds. Does he gain more speed during the first second of fall or the ninth second of fall? which of these two seconds (1st or 9th) will he fall the greater distance?
*Wednesday, October 19, 2011 by Rich*

**geometry**

if home plate is 60.5 feet from the pitcher's mound, find the distance from the pitcher's mound of a major league baseball field to the center of a circumscribed circle that touches home plate, 1st base and second base. Find the exact, simplified length of the radius ...
*Sunday, October 16, 2011 by susan*

**math**

the number of 5th grade students in a school is a prime number greater than 50.What is the least number of 5th grade students there could be in a school
*Thursday, October 13, 2011 by clayton*

**4th grade math**

how do I find the mean of 92;96;99;103;88
*Wednesday, October 12, 2011 by carter*

**Grade **

Ok today during social studies I got this mini progress report (it's a overview on what grade I have right now before they send our real progress report which they may send this week or next week) and like I just want to know what GPA i got. Here it is & other classes ...
*Tuesday, October 11, 2011 by Laruen *

**math**

Studies have shown a particular television commercial is understood by 25% of first grade students and 80% of fourth grade students. If a television advertising agency randomly selects one first grader and one fourth grader, what is the probability neither child would ...
*Tuesday, October 11, 2011 by Khizar*